77953090 has 8 divisors (see below), whose sum is σ = 140315580. Its totient is φ = 31181232.

The previous prime is 77953087. The next prime is 77953091. The reversal of 77953090 is 9035977.

It can be written as a sum of positive squares in 2 ways, for example, as 77951241 + 1849 = 8829^2 + 43^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (77953091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3897645 + ... + 3897664.

Almost surely, 2^77953090 is an apocalyptic number.

77953090 is a deficient number, since it is larger than the sum of its proper divisors (62362490).

77953090 is a wasteful number, since it uses less digits than its factorization.

77953090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7795316.

The product of its (nonzero) digits is 59535, while the sum is 40.

The square root of 77953090 is about 8829.1047111245. The cubic root of 77953090 is about 427.1801969679.

The spelling of 77953090 in words is "seventy-seven million, nine hundred fifty-three thousand, ninety".